7 Comments

1. 

   nimisha on August 16, 2012 at 8:14 am

   Hi,

   In the last ques you have mentioned the no of sq of 8*8 dimension is 208. Should it be 204?

   Reply
2. 

   88PJ on August 3, 2012 at 10:58 am

   Hi Guys,

   Could someone pls explain how we got this – “The number of ways to select two consecutive rows(or columns) are 7.”?

   Regards,
   PJ

   Reply
3. 

   praveen on May 21, 2012 at 1:22 am

   There is no mistake just want to improve the way of explaining.

   Regards,
   Praveen.

   Reply
4. 

   hiccup on May 20, 2012 at 9:37 am

   hi praveen,
   can u point out where do u think this method needs improvisation??
   coz AFAIK this is correct approach.
   can u post ur approach so that we can see what u r trying to convey??

   Reply
5. 

   hiccup on May 20, 2012 at 9:32 am

   very nice article.
   it has cleared many doubts but i would also like to ask one more type related to this.
   any general approach to solve this type of questions would be appreciated.
   Q)What is the minimum number of 3 by 5 rectangles that will cover a 26 by 26 square? The rectangles may overlap each other or the edges of square.

   Reply
6. 

   praveen on May 18, 2012 at 1:44 am

   Hi,

   Thanks allot for this article it is very helpfull.
   Here i want to add something to the explanation of Reg Question 8:

   In the solution it is mentioned

   “Thus any white square can be chosen in 32 ways and once a particular white square is chosen we cannot pick any other square row from that particular row or column(i.e. in that row or column we will have 4 black and 4 white squares)Hence we are left with 32 – 8 = 24 squares .”

   I think if the statement is “Whenever we select a column we need to consider Two rows(one with respect to horizontal and other is vertical) and in each of the rows we have 4 black columns so we have to remove 8 columns altogether”.

   Thank you.
   Regards,
   PRCHIRUM

   Reply
   • 

     prashant on May 18, 2012 at 4:44 pm

     would check it up for sure